Are these answers randomly generated by a computer using some algorithm, or is there some creep lurking in the basement that devises these patterns to rack our brains evem more and doubt our own answer choices?

I had a lot of the same letter on the first RC passage. Lets abide by LSAC rules and not comment on what that answer is. But I remember thinking at the time that this was probably one of those crazy mental games the LSAT likes to play.